feat: update namespace TypeScript declarations

PR-URL: #2710
Co-authored-by: Athan Reines <[email protected]>
Reviewed-by: Athan Reines <[email protected]> 
Signed-off-by: stdlib-bot <[email protected]>

Author: stdlib-bot

lib/node_modules/@stdlib/lapack/base/docs/types/index.d.ts

@@ -21,6 +21,7 @@
 /* eslint-disable max-lines */
 
 import dlacpy = require( '@stdlib/lapack/base/dlacpy' );
+import dlassq = require( '@stdlib/lapack/base/dlassq' );
 import dlaswp = require( '@stdlib/lapack/base/dlaswp' );
 import dpttrf = require( '@stdlib/lapack/base/dpttrf' );
 
@@ -61,6 +62,35 @@ interface Namespace {
 	*/
 	dlacpy: typeof dlacpy;
 
+	/**
+	* Returns an updated sum of squares represented in scaled form.
+	*
+	* @param N - number of indexed elements
+	* @param X - input array
+	* @param strideX - stride length for `X`
+	* @param scale - scaling factor
+	* @param sumsq - basic sum of squares from which output is factored out
+	* @returns output array
+	*
+	* @example
+	* var Float64Array = require( '@stdlib/array/float64' );
+	*
+	* var X = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+	*
+	* var out = ns.dlassq( 4, X, 1, 1.0, 0.0, out );
+	* // returns <Float64Array>[ 1.0, 30.0 ]
+	*
+	* @example
+	* var Float64Array = require( '@stdlib/array/float64' );
+	*
+	* var X = new Float64Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+	* var out = new Float64Array( [ 0.0, 0.0 ] );
+	*
+	* ns.dlassq.ndarray( 4, X, 1, 0, 1.0, 0.0, out, 1, 0 );
+	* // out => <Float64Array>[ 1.0, 30.0 ]
+	*/
+	dlassq: typeof dlassq;
+
 	/**
 	* Performs a series of row interchanges on a matrix `A` using pivot indices stored in `IPIV`.
 	*